64914911866 has 16 divisors (see below), whose sum is σ = 111326288256. Its totient is φ = 27809780976.

The previous prime is 64914911861. The next prime is 64914911969. The reversal of 64914911866 is 66811941946.

It is not an unprimeable number, because it can be changed into a prime (64914911861) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 870886 + ... + 942481.

It is an arithmetic number, because the mean of its divisors is an integer number (6957893016).

Almost surely, 2^64914911866 is an apocalyptic number.

64914911866 is a deficient number, since it is larger than the sum of its proper divisors (46411376390).

64914911866 is a wasteful number, since it uses less digits than its factorization.

64914911866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1815933.

The product of its digits is 2239488, while the sum is 55.

The spelling of 64914911866 in words is "sixty-four billion, nine hundred fourteen million, nine hundred eleven thousand, eight hundred sixty-six".